Theoretical study on stimulated Raman scattering and mode evolution characteristics in spindle-shaped Ytterbium-doped fiber laser

Lingfa Zeng; Chen Shi; Xiaoming Xi; Hanwei Zhang; Peng Wang; Baolai Yang; Xiaolin Wang; Xiaojun Xu

doi:10.1117/12.2625190

27 March 2022 Theoretical study on stimulated Raman scattering and mode evolution characteristics in spindle-shaped Ytterbium-doped fiber laser

Lingfa Zeng, Chen Shi, Xiaoming Xi, Hanwei Zhang, Peng Wang, Baolai Yang, Xiaolin Wang, Xiaojun Xu

Author Affiliations +

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121698X (2022) https://doi.org/10.1117/12.2625190
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

The spindle-shaped fiber is a novel fiber with a gradual longitudinal structure. The small size section and large size section have the advantages of controlling the number of modes and reducing the laser power density respectively. Based on the steady-state rate equations and coupled mode theory of fiber lasers, this paper conducts theoretical research and comparative analysis on SRS and mode evolution in fiber lasers based on conventional fibers and spindle-shaped fibers, respectively. The results show that, compared with conventional fibers with the similar core diameter, the spindle-shaped fiber can effectively balance the mitigation of SRS and TMI in fiber lasers, and has great potential for achieving higher power laser with better beam quality.

Citation Download Citation

Lingfa Zeng, Chen Shi, Xiaoming Xi, Hanwei Zhang, Peng Wang, Baolai Yang, Xiaolin Wang, and Xiaojun Xu "Theoretical study on stimulated Raman scattering and mode evolution characteristics in spindle-shaped Ytterbium-doped fiber laser", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121698X (27 March 2022); https://doi.org/10.1117/12.2625190

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